70766173421 has 4 divisors (see below), whose sum is σ = 70821504000. Its totient is φ = 70710842844.

The previous prime is 70766173393. The next prime is 70766173451. The reversal of 70766173421 is 12437166707.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12437166707 = 7 ⋅1776738101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70766173421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70766173451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27663371 + ... + 27665928.

It is an arithmetic number, because the mean of its divisors is an integer number (17705376000).

Almost surely, 2^70766173421 is an apocalyptic number.

It is an amenable number.

70766173421 is a deficient number, since it is larger than the sum of its proper divisors (55330579).

70766173421 is a wasteful number, since it uses less digits than its factorization.

70766173421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55330578.

The product of its (nonzero) digits is 296352, while the sum is 44.

The spelling of 70766173421 in words is "seventy billion, seven hundred sixty-six million, one hundred seventy-three thousand, four hundred twenty-one".